test: add unit tests for user account activation flow

backend/users/tests.py

@@ -1,6 +1,9 @@
 from django.conf import settings
 from django.contrib.auth import get_user_model
+from django.contrib.auth.tokens import default_token_generator
 from django.urls import reverse
+from django.utils.encoding import force_bytes
+from django.utils.http import urlsafe_base64_encode
 from rest_framework import status
 from rest_framework.test import APITestCase
 
@@ -28,3 +31,20 @@ class AuthTests(APITestCase):
         self.assertIn(cookie_name, response.cookies)
         # verify the cookie has a value
         self.assertTrue(response.cookies[cookie_name].value)
+
+
+class ActivationTests(APITestCase):
+    def test_user_activation(self):
+        # initial user state
+        user = User.objects.create_user(email="inactive@test.com", password="password1234", is_active=False)
+        # generate activation link
+        uidb64 = urlsafe_base64_encode(force_bytes(user.public_id))
+        token = default_token_generator.make_token(user)
+        # call activation url
+        activation_url = reverse("activate", kwargs={"uidb64": uidb64, "token": token})
+        response = self.client.get(activation_url)
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        # check user is activated
+        user.refresh_from_db()
+        self.assertTrue(user.is_active)